Power supply module

Abstract

A power supply module includes at least one sub-power supply module. Each of the at least one sub-power supply module includes an upper circuit board, a lower circuit board and an inductor. The inductor is disposed between the upper circuit board and the lower circuit board. An upper surface of the inductor faces the upper circuit board and a lower surface of the inductor faces the lower circuit board. The inductor includes two primary windings and two secondary windings. Two electrodes of each of the two primary windings are respectively arranged at the upper surface and the lower surface of the inductor and respectively connected to the upper circuit board and the lower circuit board. The two secondary windings are electrically connected in series through the upper circuit board and the lower circuit board or through the upper circuit board.

What is claimed is: 
     
         1 . A power supply module comprising at least one sub-power supply module, each of the at least one sub-power supply module comprising:
 an upper circuit board;   a lower circuit board disposed opposite to the upper circuit board, the lower circuit board having a plurality of power electrodes disposed on a mounting surface of the lower circuit board, the plurality of power electrodes being configured to be mounted to a system board; and   an inductor disposed between the upper circuit board and the lower circuit board, an upper surface of the inductor facing the upper circuit board, a lower surface of the inductor facing the lower circuit board, the inductor comprising two primary windings and two secondary windings, two electrodes of each of the two primary windings being respectively arranged at the upper surface and the lower surface of the inductor and respectively connected to the upper circuit board and the lower circuit board, the two secondary windings being electrically connected in series through the upper circuit board and the lower circuit board or through the upper circuit board.   
     
     
         2 . The power supply module of  claim 1 , wherein two electrodes of each of the two secondary windings are respectively arranged at the upper surface and the lower surface of the inductor and respectively connected to the upper circuit board and the lower circuit board, the inductor further comprises two connecting members, two ends of each of the two connecting members are respectively arranged at the upper surface and the lower surface of the inductor and respectively connected to the upper circuit board and the lower circuit board, such that the two secondary windings are electrically connected in series through the upper circuit board, the lower circuit board and the two connecting members. 
     
     
         3 . The power supply module of  claim 2 , wherein the two connecting members are disposed within a magnetic body of the inductor and located at two opposite sides of the magnetic body. 
     
     
         4 . The power supply module of  claim 1 , wherein the inductor further comprises two power conductive members and two ends of each of the two power conductive members are respectively arranged at the upper surface and the lower surface of the inductor. 
     
     
         5 . The power supply module of  claim 4 , wherein the two power conductive members are disposed within a magnetic body of the inductor and located at two opposite sides of the magnetic body. 
     
     
         6 . The power supply module of  claim 1 , comprising a plurality of sub-power supply modules, wherein the lower circuit boards of the plurality of sub-power supply modules are integrated to be one single lower circuit board and the upper circuit boards of the plurality of sub-power supply modules are separated from each other. 
     
     
         7 . The power supply module of  claim 1 , wherein two electrodes of each of the two secondary windings are arranged at the upper surface of the inductor and connected to the upper circuit board, such that the two secondary windings are electrically connected in series through the upper circuit board. 
     
     
         8 . The power supply module of  claim 1 , wherein the sub-power supply module comprises at least one control electrode configured to receive control signals from a power component on the upper circuit board through a signal connecting structure. 
     
     
         9 . The power supply module of  claim 1 , wherein the power supply module comprises a power controller disposed on the upper circuit board, the power controller transmits control signals to a power component on the upper circuit board through the upper circuit board, there is no control electrode disposed on the lower circuit board, and the control signals are only transmitted through the upper circuit board. 
     
     
         10 . The power supply module of  claim 1 , wherein the inductor is a symmetrical structure. 
     
     
         11 . The power supply module of  claim 1 , wherein two power switches are disposed on the upper circuit board, and the two power switches are connected in series at a switch pad to form a half bridge power component or a full bridge power component. 
     
     
         12 . The power supply module of  claim 11 , wherein the switch pad is electrically connected to one of the two electrodes of the primary winding arranged at the upper surface of the inductor, the other one of the two electrodes of the primary winding arranged at the lower surface of the inductor is electrically connected to an output electrode of the lower circuit board, and one of the two primary windings and one of the two power switches form one-phase power output. 
     
     
         13 . The power supply module of  claim 1 , further comprising a plurality of output capacitors, wherein the lower surface of the inductor has a recess configured to accommodate the plurality of output capacitors. 
     
     
         14 . The power supply module of  claim 1 , further comprising a plurality of input capacitors embedded in the upper surface of the inductor. 
     
     
         15 . The power supply module of  claim 1 , wherein the lower circuit board is equipped with a plurality of output capacitors without input capacitors and the upper circuit board is equipped with a plurality of input capacitors without output capacitors. 
     
     
         16 . A power supply module comprising at least one sub-power supply module, each of the at least one sub-power supply module comprising:
 an upper circuit board;   a lower circuit board disposed opposite to the upper circuit board, the lower circuit board having a plurality of power electrodes disposed on a mounting surface of the lower circuit board, the plurality of power electrodes being configured to be mounted to a system board; and   an inductor disposed between the upper circuit board and the lower circuit board, an upper surface of the inductor facing the upper circuit board, a lower surface of the inductor facing the lower circuit board, the inductor comprising two primary windings and two secondary windings, two electrodes of each of the two primary windings being respectively arranged at the upper surface and the lower surface of the inductor and respectively connected to the upper circuit board and the lower circuit board, two electrodes of each of the two secondary windings being arranged at the lower surface of the inductor and connected to the lower circuit board, such that the two secondary windings are electrically connected in series through the lower circuit board and the system board.   
     
     
         17 . The power supply module of  claim 16 , wherein a plurality of output capacitors are embedded in the lower circuit board.